About Optics & Photonics TopicsOSA Publishing developed the Optics and Photonics Topics to help organize its diverse content more accurately by topic area. This topic browser contains over 2400 terms and is organized in a three-level hierarchy. Read more.

Topics can be refined further in the search results. The Topic facet will reveal the high-level topics associated with the articles returned in the search results.

Abstract

A plasmonic metamaterial is proposed for which an array of subwavelength apertures is pierced into a metallic foil whose one flat surface has been made with periodic rectangle holes of finite depth. Designed surface plasmons sustained by the holes are explored when the size and spacing of the holes are much smaller than those of the apertures. The transmission property of electromagnetic waves through the metamaterials is analyzed. Results show that the designed surface plasmons characterized by the holes could support the transmission resonances of the incident wave passing through the subwavelength apertures, and that the peak transmission wavelengths could be designed by controlling the geometrical and optical parameters of the holes. Example is taken at THz regime. Our work proposes a method to design the peak wavelengths, and may affect further engineering of surface plasmon optics, especially in THz to microwave regimes.

Figures (5)

(a) A set of a × b rectangle holes of infinite depth arranged on a d × d lattice is pierced into a square metallic foil. (b) A set of a × b rectangle holes with finite depth h arranged on a d × d lattice is made on one surface of a square metallic foil. (c) In the effective medium approximation the structure displayed in (b) behaves as a homogeneous but anisotropic layer of thickness h on top of a perfect conductor.

Schematic structure of the proposed plasmonic metamaterial. A set of subwavelength square apertures with size A arranged on a D × D lattice is cut into a metallic foil whose one surface has been made with rectangle holes whose sizes a and b, depth h, and spacing d are smaller than A and D at least one order of magnitude.